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Identification with imperfect instruments

Nevo, Aviv (contributor); Rosen, Adam M. (contributor) - 2008

Dealing with endogenous regressors is a central challenge of applied research. The standard solution is to use instrumental variables that are assumed to be uncorrelated with unobservables. We instead assume (i) the correlation between the instrument and the error term has the same sign as the...

Persistent link: https://www.econbiz.de/10003739684

L1-Penalised quantile regression in high-dimensional sparse models

Belloni, Alexandre; Chernozhukov, Victor - 2009

We consider median regression and, more generally, quantile regression in high-dimensional sparse models. In these models the overall number of regressors p is very large, possibly larger than the sample size n, but only s of these regressors have non-zero impact on the conditional quantile of...

Persistent link: https://www.econbiz.de/10003838974

Set identification with Tobin regressors

Chernozhukov, Victor; Rigobón, Roberto; Stoker, Thomas … - 2009

We give semiparametric identification and estimation results for econometric models with a regressor that is endogenous, bound censored and selected, called a Tobin regressor. First, we show that true parameter value is set identified and characterize the identification sets. Second, we propose...

Persistent link: https://www.econbiz.de/10003838979

Quantile and average effects in nonseparable panel models

Chernozhukov, Victor; Fernández-Val, Iván; Newey, … - 2009

This paper gives identification and estimation results for quantile and average effects in nonseparable panel models, when the distribution of period specific disturbances does not vary over time. Bounds are given for interesting effects with discrete regressors that are strictly exogenous or...

Persistent link: https://www.econbiz.de/10003899091

Instrumental variables in models with multiple outcomes : the general unordered case

Heckman, James J.; Urzua, Sergio; Vytlacil, Edward - 2008

This paper develops the method of local instrumental variables for models with multiple, unordered treatments when treatment choice is determined by a nonparametric version of the multinomial choice model. Responses to interventions are permitted to be heterogeneous in a general way and agents...

Persistent link: https://www.econbiz.de/10003870351

The firm size distribution in a small open economy : theory and evidence

Li, Qi; Walsh, Patrick Paul - 2009

We construct a theoretical model of the dynamic processes (firm entry, growth, decline, and exit) that underpin the determination of a limiting firm size distribution (FSD). In particular, we model such dynamic processes using key structural parameters; sunk cost, exogenous entry constraints,...

Persistent link: https://www.econbiz.de/10003870856

Identification and estimation of firms' marginal cost functions with incomplete knowledge of strategic behavior

Rosen, Adam M. (contributor) - 2007

Persistent link: https://www.econbiz.de/10003410803

Quantile and probability curves without crossing

Chernozhukov, Victor (contributor); … - 2007

Persistent link: https://www.econbiz.de/10003454059

Sparse models and methods for optimal instruments with an application to eminent domain

Belloni, A.; Chen, D.; Chernozhukov, Victor; Hansen, … - 2010

sample size, n. We rigorously develop asymptotic distribution and inference theory for the resulting IV estimators and … functions which are of independent theoretical and practical interest. Specifically, we develop the asymptotic theory for these … innovatively using moderate deviation theory for self-normalized sums, we provide convergence rates for these estimators that are …

Persistent link: https://www.econbiz.de/10008695561

Testing the correlated random coefficient model

Heckman, James J.; Schmierer, Daniel; Urzua, Sergio - 2010

The recent literature on instrumental variables (IV) features models in which agents sort into treatment status on the basis of gains from treatment as well as on baselinepretreatment levels. Components of the gains known to the agents and acted on by them may not be known by the observing...

Persistent link: https://www.econbiz.de/10003989944